CFD Study of Reactivity Controlled Compression Ignition (RCCI) Combustion in a Heavy-Duty Diesel Engine

Authors

  • Amir-Hasan Kakaee
    Affiliation

    Iran University of Science and Technology

  • Pourya Rahnama
    Affiliation

    Iran University of Science and Technology

  • Amin Paykani
    Affiliation

    Iran University of Science and Technology

https://doi.org/10.3311/PPtr.7756

Abstract

In this paper, a numerical study is carried out to investigate the combustion and emission characteristics of reactivity controlled compression ignition (RCCI) combustion mode in a heavy-duty, single-cylinder diesel engine with gasoline and diesel fuels using KIVA-CHEMKIN code with a reduced primary reference fuel (PRF) mechanism. Firstly, a comparison is performed between RCCI and CDC performance and emissions to show the superior characteristics of RCCI combustion. Then, the effect of diesel fuel mass fraction in SOI-1 on combustion and emissions of RCCI engine is studied. It is shown that by increasing the diesel mass fraction in SOI-1, combustion event occurs earlier and PPRR is slightly higher. But this parameter has a trivial influence compared to PRF number and SOI timing.

Keywords:

Reactivity controlled compression ignition (RCCI); Start of injection; gross indicated efficiency (GIE); NOx emissions; Ringing intensity (RI)

Published Online

2015-09-10

How to Cite

Kakaee, A.-H., Rahnama, P., Paykani, A. (2015) “CFD Study of Reactivity Controlled Compression Ignition (RCCI) Combustion in a Heavy-Duty Diesel Engine”, Periodica Polytechnica Transportation Engineering, 43(4), pp. 177–183. https://doi.org/10.3311/PPtr.7756

Issue

Section

Articles